Provide prototype implementation for topology handling

Related to #212

api/go/gosdn/topology/link.pb.go

+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.27.1
+// 	protoc        (unknown)
+// source: gosdn/topology/link.proto
+
+package topology
+
+import (
+	_ "github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2/options"
+	_ "google.golang.org/genproto/googleapis/api/annotations"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	_ "google.golang.org/protobuf/types/descriptorpb"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type Link struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id         string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Name       string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
+	SourceNode *Node  `protobuf:"bytes,3,opt,name=sourceNode,proto3" json:"sourceNode,omitempty"`
+	TargetNode *Node  `protobuf:"bytes,4,opt,name=targetNode,proto3" json:"targetNode,omitempty"`
+	SourcePort *Port  `protobuf:"bytes,5,opt,name=sourcePort,proto3" json:"sourcePort,omitempty"`
+	TargetPort *Port  `protobuf:"bytes,6,opt,name=targetPort,proto3" json:"targetPort,omitempty"`
+}
+
+func (x *Link) Reset() {
+	*x = Link{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_gosdn_topology_link_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Link) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Link) ProtoMessage() {}
+
+func (x *Link) ProtoReflect() protoreflect.Message {
+	mi := &file_gosdn_topology_link_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Link.ProtoReflect.Descriptor instead.
+func (*Link) Descriptor() ([]byte, []int) {
+	return file_gosdn_topology_link_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Link) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *Link) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *Link) GetSourceNode() *Node {
+	if x != nil {
+		return x.SourceNode
+	}
+	return nil
+}
+
+func (x *Link) GetTargetNode() *Node {
+	if x != nil {
+		return x.TargetNode
+	}
+	return nil
+}
+
+func (x *Link) GetSourcePort() *Port {
+	if x != nil {
+		return x.SourcePort
+	}
+	return nil
+}
+
+func (x *Link) GetTargetPort() *Port {
+	if x != nil {
+		return x.TargetPort
+	}
+	return nil
+}
+
+var File_gosdn_topology_link_proto protoreflect.FileDescriptor
+
+var file_gosdn_topology_link_proto_rawDesc = []byte{
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+}
+
+var (
+	file_gosdn_topology_link_proto_rawDescOnce sync.Once
+	file_gosdn_topology_link_proto_rawDescData = file_gosdn_topology_link_proto_rawDesc
+)
+
+func file_gosdn_topology_link_proto_rawDescGZIP() []byte {
+	file_gosdn_topology_link_proto_rawDescOnce.Do(func() {
+		file_gosdn_topology_link_proto_rawDescData = protoimpl.X.CompressGZIP(file_gosdn_topology_link_proto_rawDescData)
+	})
+	return file_gosdn_topology_link_proto_rawDescData
+}
+
+var file_gosdn_topology_link_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_gosdn_topology_link_proto_goTypes = []interface{}{
+	(*Link)(nil), // 0: gosdn.topology.Link
+	(*Node)(nil), // 1: gosdn.topology.Node
+	(*Port)(nil), // 2: gosdn.topology.Port
+}
+var file_gosdn_topology_link_proto_depIdxs = []int32{
+	1, // 0: gosdn.topology.Link.sourceNode:type_name -> gosdn.topology.Node
+	1, // 1: gosdn.topology.Link.targetNode:type_name -> gosdn.topology.Node
+	2, // 2: gosdn.topology.Link.sourcePort:type_name -> gosdn.topology.Port
+	2, // 3: gosdn.topology.Link.targetPort:type_name -> gosdn.topology.Port
+	4, // [4:4] is the sub-list for method output_type
+	4, // [4:4] is the sub-list for method input_type
+	4, // [4:4] is the sub-list for extension type_name
+	4, // [4:4] is the sub-list for extension extendee
+	0, // [0:4] is the sub-list for field type_name
+}
+
+func init() { file_gosdn_topology_link_proto_init() }
+func file_gosdn_topology_link_proto_init() {
+	if File_gosdn_topology_link_proto != nil {
+		return
+	}
+	file_gosdn_topology_node_proto_init()
+	file_gosdn_topology_port_proto_init()
+	if !protoimpl.UnsafeEnabled {
+		file_gosdn_topology_link_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Link); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_gosdn_topology_link_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_gosdn_topology_link_proto_goTypes,
+		DependencyIndexes: file_gosdn_topology_link_proto_depIdxs,
+		MessageInfos:      file_gosdn_topology_link_proto_msgTypes,
+	}.Build()
+	File_gosdn_topology_link_proto = out.File
+	file_gosdn_topology_link_proto_rawDesc = nil
+	file_gosdn_topology_link_proto_goTypes = nil
+	file_gosdn_topology_link_proto_depIdxs = nil
+}